Feeding rabbits question

[Squirtle]

Ever since about March of 2012, I've been feeding my Albino Burmese Python 2 pound chickens until now. I don't know how big he is but I'm guessing around 7-8 feet and he's about to be 2 years old on December 20th. The butcher shop around my house is now starting to sell rabbits any size for $10, and I was wondering if they're better than chickens? Can I feed him these every 3 weeks? And last but not least, will the rabbits make him grow better than the chickens? He's also for some having difficulties eating the chicken.. I think it's hard for him to find the head and sometimes he tries to start in other places like the legs, wings etc..